Evaluation of the late life disability instrument in the lifestyle
interventions and independence for elders pilot (LIFE-P) study.

Background: The late life disability instrument (LLDI) was developed to
assess limitations in instrumental and management roles using a small and restricted
sample. In this paper we examine the measurement properties of the LLDI using data
from the Lifestyle Interventions and Independence for Elders Pilot (LIFE-P)
study.